1 | // Copyright (C) 2003, Fernando Luis Cacciola Carballal. |
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2 | // Copyright (C) 2007, Tobias Schwinger. |
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3 | // |
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4 | // Use, modification, and distribution is subject to the Boost Software |
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5 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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6 | // http://www.boost.org/LICENSE_1_0.txt) |
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7 | // |
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8 | // See http://www.boost.org/libs/optional for documentation. |
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9 | // |
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10 | // You are welcome to contact the author at: |
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11 | // fernando_cacciola@hotmail.com |
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12 | // |
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13 | #ifndef BOOST_UTILITY_INPLACE_FACTORY_04APR2007_HPP |
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14 | #ifndef BOOST_PP_IS_ITERATING |
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15 | |
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16 | #include <boost/utility/detail/in_place_factory_prefix.hpp> |
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17 | |
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18 | namespace boost { |
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19 | |
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20 | class in_place_factory_base {} ; |
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21 | |
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22 | #define BOOST_PP_ITERATION_LIMITS (0, BOOST_MAX_INPLACE_FACTORY_ARITY) |
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23 | #define BOOST_PP_FILENAME_1 <boost/utility/in_place_factory.hpp> |
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24 | #include BOOST_PP_ITERATE() |
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25 | |
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26 | } // namespace boost |
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27 | |
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28 | #include <boost/utility/detail/in_place_factory_suffix.hpp> |
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29 | |
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30 | #define BOOST_UTILITY_INPLACE_FACTORY_04APR2007_HPP |
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31 | #else |
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32 | #define N BOOST_PP_ITERATION() |
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33 | |
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34 | #if N |
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35 | template< BOOST_PP_ENUM_PARAMS(N, class A) > |
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36 | #endif |
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37 | class BOOST_PP_CAT(in_place_factory,N) |
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38 | : |
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39 | public in_place_factory_base |
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40 | { |
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41 | public: |
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42 | |
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43 | explicit BOOST_PP_CAT(in_place_factory,N) |
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44 | ( BOOST_PP_ENUM_BINARY_PARAMS(N,A,const& a) ) |
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45 | #if N > 0 |
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46 | : BOOST_PP_ENUM(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_INIT, _) |
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47 | #endif |
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48 | {} |
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49 | |
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50 | template<class T> |
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51 | void* apply(void* address |
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52 | BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(T)) const |
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53 | { |
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54 | return new(address) T( BOOST_PP_ENUM_PARAMS(N, m_a) ); |
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55 | } |
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56 | |
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57 | template<class T> |
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58 | void* apply(void* address, std::size_t n |
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59 | BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(T)) const |
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60 | { |
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61 | for(char* next = address = this->BOOST_NESTED_TEMPLATE apply<T>(address); |
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62 | !! --n;) |
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63 | this->BOOST_NESTED_TEMPLATE apply<T>(next = next+sizeof(T)); |
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64 | return address; |
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65 | } |
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66 | |
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67 | BOOST_PP_REPEAT(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_DECL, _) |
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68 | }; |
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69 | |
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70 | #if N > 0 |
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71 | template< BOOST_PP_ENUM_PARAMS(N, class A) > |
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72 | inline BOOST_PP_CAT(in_place_factory,N)< BOOST_PP_ENUM_PARAMS(N, A) > |
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73 | in_place( BOOST_PP_ENUM_BINARY_PARAMS(N, A, const& a) ) |
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74 | { |
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75 | return BOOST_PP_CAT(in_place_factory,N)< BOOST_PP_ENUM_PARAMS(N, A) > |
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76 | ( BOOST_PP_ENUM_PARAMS(N, a) ); |
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77 | } |
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78 | #else |
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79 | inline in_place_factory0 in_place() |
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80 | { |
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81 | return in_place_factory0(); |
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82 | } |
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83 | #endif |
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84 | |
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85 | #undef N |
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86 | #endif |
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87 | #endif |
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88 | |
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